FAN

#include <GL/glut.h>

float x = 0;
int c = 0;
int m,n,p;
float angle = 0;


void single_blade(void)

{


glColor3f(1,1,1);
glBegin(GL_LINE_LOOP);
glVertex3f(0,0,0);
glVertex3f(.1,.05,0);
glVertex3f(.1,.1,0);
glVertex3f(.2,.2,0);
glVertex3f(.2,.25,0);
glVertex3f(.1,.25,0);
glVertex3f(.25,.35,0);
glVertex3f(.2,.35,0);
glVertex3f(.3,.45,0);
glVertex3f(.25,.45,0);
glVertex3f(.4,.55,0);
glVertex3f(.3,.55,0);
glVertex3f(-.3,.55,0);
glVertex3f(-.4,.55,0);
glVertex3f(-.25,.45,0);
glVertex3f(-.3,.45,0);
glVertex3f(-.2,.35,0);
glVertex3f(-.25,.35,0);
glVertex3f(-.1,.25,0);
glVertex3f(-.2,.25,0);
glVertex3f(-.2,.2,0);
glVertex3f(-.1,.1,0);
glVertex3f(-.1,.05,0);
glVertex3f(0,0,0);
glEnd();

}

void full_fan(void)
{
	single_blade();

	glRotatef(90,0,0,1);
	single_blade();

	glRotatef(180,0,0,1);
	single_blade();

	glRotatef(270,0,0,1);
	single_blade();

}


void all_fan(void)
{
	full_fan();

	glPushMatrix();
	glTranslatef(-0.7,-0.7, 0);
	glScalef(.3 , .3 , 1);
	full_fan();
	glPopMatrix();

	glPushMatrix();
	glTranslatef(0.7,0.7,0);
	glScalef(.3 , .3 , 1);
	full_fan();
	glPopMatrix();

	glPushMatrix();
	glTranslatef(-0.7,0.7,0);
	glScalef(.3 , .3 , 1);
	full_fan();
	glPopMatrix();

	glPushMatrix();
	glTranslatef(0.7,-0.7,0);
	glScalef(.3 , .3 , 1);
	full_fan();
	glPopMatrix();

}


void display(void)

{

	glClearColor(0.0, 0.0, 0.0, 1.0);
	glClear(GL_COLOR_BUFFER_BIT);
	glLoadIdentity();
	gluLookAt(0.0, 0.0, 5.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);



	glRotatef(angle+=0.5,0,0,1);
	all_fan();

	glFlush();


//find a way to make 4 projections of the complete fan in four different corner of the screen.


}

void reshape(int w, int h) {

	glViewport(0, 0, (GLsizei)w, (GLsizei)h);
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	gluPerspective(30, 1, 1.0, 100.0);
	glMatrixMode(GL_MODELVIEW);
}

int main(int argc, char **argv) {
	glutInit(&argc, argv);
	glutInitDisplayMode(GLUT_SINGLE); // single buffering.. (double buffering for animation)
									  // full screen is 1000,1000
									  // this 0,0 or 1000,1000 are world co ordinates
	glutInitWindowSize(700, 700);
	glutInitWindowPosition(100, 100);
	glutCreateWindow("A basic OpenGL Window");
	// registering callback functions
	glutDisplayFunc(display);
	glutReshapeFunc(reshape);
	glutIdleFunc(display);
	glutMainLoop();
	return 0;
}